1 /* $NetBSD: pig.c,v 1.15 2012/06/19 05:46:09 dholland Exp $ */
2
3 /*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __COPYRIGHT("@(#) Copyright (c) 1992, 1993\
35 The Regents of the University of California. All rights reserved.");
36 #endif /* not lint */
37
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)pig.c 8.2 (Berkeley) 5/4/95";
41 #else
42 __RCSID("$NetBSD: pig.c,v 1.15 2012/06/19 05:46:09 dholland Exp $");
43 #endif
44 #endif /* not lint */
45
46 #include <sys/types.h>
47
48 #include <ctype.h>
49 #include <err.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
53 #include <unistd.h>
54
55 int main(int, char *[]);
56 static void pigout(char *, int);
57 static void usage(void) __dead;
58
59 int
main(int argc,char * argv[])60 main(int argc, char *argv[])
61 {
62 int len;
63 int ch;
64 char buf[1024];
65
66 while ((ch = getopt(argc, argv, "")) != -1)
67 switch(ch) {
68 case '?':
69 default:
70 usage();
71 }
72 argc -= optind;
73 argv += optind;
74
75 for (len = 0; (ch = getchar()) != EOF;) {
76 if (isalpha(ch)) {
77 if ((size_t)len >= sizeof(buf))
78 errx(1, "ate too much!");
79 buf[len++] = ch;
80 continue;
81 }
82 if (len != 0) {
83 pigout(buf, len);
84 len = 0;
85 }
86 (void)putchar(ch);
87 }
88 exit(0);
89 }
90
91 static void
pigout(char * buf,int len)92 pigout(char *buf, int len)
93 {
94 int ch, start, i;
95 int olen, allupper, firstupper;
96
97 /* See if the word is all upper case */
98 allupper = firstupper = isupper((unsigned char)buf[0]);
99 for (i = 1; i < len && allupper; i++)
100 allupper = allupper && isupper((unsigned char)buf[i]);
101
102 /*
103 * If the word starts with a vowel, append "way". Don't treat 'y'
104 * as a vowel if it appears first.
105 */
106 if (strchr("aeiouAEIOU", buf[0]) != NULL) {
107 (void)printf("%.*s%s", len, buf,
108 allupper ? "WAY" : "way");
109 return;
110 }
111
112 /*
113 * Copy leading consonants to the end of the word. The unit "qu"
114 * isn't treated as a vowel.
115 */
116 if (!allupper)
117 buf[0] = tolower((unsigned char)buf[0]);
118 for (start = 0, olen = len;
119 !strchr("aeiouyAEIOUY", buf[start]) && start < olen;) {
120 ch = buf[len++] = buf[start++];
121 if ((ch == 'q' || ch == 'Q') && start < olen &&
122 (buf[start] == 'u' || buf[start] == 'U'))
123 buf[len++] = buf[start++];
124 }
125 if (firstupper)
126 buf[start] = toupper((unsigned char)buf[start]);
127 (void)printf("%.*s%s", olen, buf + start, allupper ? "AY" : "ay");
128 }
129
130 static void
usage(void)131 usage(void)
132 {
133 (void)fprintf(stderr, "usage: pig\n");
134 exit(1);
135 }
136